摘要
以大菱鲆(Scophthalmus maximus)幼鱼为研究对象,探讨饲料中添加壳寡糖稀土配合物(Chitosan Oligosaccharide complex with Rare Earth,COS-Ree)对于镉在其体内富集的影响。分别设计了基础饲料组、添加重金属镉试验组、添加镉和COS-Ree配合物试验组(添加COS-Ree浓度分别为125,250,500和1000mg/kg)共计6种试验饲料。对大菱鲆幼鱼(8.9±0.9)g进行为期50d的饲养试验,试验结果表明:重金属镉在大菱鲆体内各组织部位的富集积累程度:肝>肾>>鳃>肌肉;饲料中添加COS-Ree可以有效地抑制重金属镉在大菱鲆体内的富集积累,提高其成活率。其中COS-Ree添加量为250和500mg/kg的试验处理组的效果最为显著(P<0.05)。
A feeding trial was conducted to investigate the effect of Chitosan Oligosaccharide complex with Rare Earth（COS-Ree）on the cadmium（Cd）accumulation in turbot Scophthalmus maximus（initial average weight 8.9？？.9g）.Six diets were formulated：basal diet;basal diet containing 50mg/kg cadmium;basal diet containing 50mg/kg cadmium and 125mg/kg COS-Ree;basal diet containing 50mg/kg cadmium and 250mg/kg COS-Ree;basal diet containing 50mg/kg cadmium and 500mg/kg COS-Ree;basal diet containing 50mg/kg cadmium and 1 000mg/kg COS-Ree.Each group of turbot were fed with corresponding diet for 50days.The results showed that the contents of Cd accumulated by each tissue of turbot were different.Its accumulation capacity was：LiverKidneyGillMuscle.The content of Cd in turbot could be inhibited by COS-Ree added in diet.COS-Ree could also increase the survival rate of turbot.The effects of diets containing 250and 500mg/kg COS-Ree were significant（P〈0.05）.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第11期57-61,共5页
Periodical of Ocean University of China
基金
国家自然科学基金项目(30972289)
山东省自然科学基金项目(ZR2009DM026)
"十一五"国家科技支撑计划项目(2008BAD94B09)资助
关键词
大菱鲆
壳寡糖稀土配合物
镉
富集
Scophthalmus maximus chitosan oligosaccharide complex with rare earth（COS-Ree） cadmium accumulation
